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Table 1 Correlation of PSA SPOT test interpretations with PSA quantitative values

From: Evaluation of a rapid one-step PSA test for primary prostate cancer screening

PSA (ng/mL) n* PSA SPOT test Accuracy (%)
+ ++
< 3 1043 1002 32 9 96.1
3–4 108 69 23 16 63.9
4–5 52 23 12 17 55.8
5–10 97 14 22 61 85.6
10–20 23 0 1 22 100.0
 > 20 17 1 0 16 94.1
  1. *Some samples not included due to invalid results